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Finding the Fourth Proportional to 8,391.80, 12,582.22 and 4,694.44

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Solution

The fourth proportional to 8,391.80, 12,582.22 and 4,694.44 is: 7,038.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.80 : 12,582.22 = 4,694.44 : x
  2. Step 2: Convert to fraction form
    8,391.80/12,582.22 = 4,694.44/x
  3. Step 3: Cross multiply
    8,391.80x = 12,582.22 × 4,694.44
  4. Step 4: Simplify right side
    8,391.80x = 59,066,476.86
  5. Step 5: Solve for x
    x = 59,066,476.86/8,391.80
  6. Step 6: Final answer
    x = 7,038.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.